Unwanted iMovie audio fades!

[Amanda Forbis]

Hi...

I recently switched from OS 9 to OS X, and when I fired up iMovie, 
(2.1.2) I found a lot of my voice over tracks were fading in and out, 
without being asked to! Really annoying! Though my sound tracks are 
chock full of effects and music from CD and mic-ed in  voice over, the 
project is not all that heavy as I am using mostly still images. The 
same project worked flawlessly in OS 9.

Any ideas?

And thanks.

Amanda